GDS to PA:- BODMAS 50 MCQ With Explanation

 

01. b - [b -(a+b) - {b - (b - a+b)} + 2a] ,
A. a
B. 2a
C. 4a
D. 0

... Answer is D
b-[b-(a+b)-{b-(b-a+b)}+2a] =b-[b-a-b-{b-(2b-a)}+2a] =b-[-a-{b-2b+a}+2a] =b-[-a-{-b+a}+2a] =b-[-a+b-a+2a] =b-[-2a+b+2a] =b-b =0

02. 100 + 50 * 2 = ? ,
A. 200
B. 150
C. 100
D. 300

... Answer is A
After applying BOMAS rule, First Multiplication will be done then addition So it will be 100 + 100 = 200

03. (3080 + 6160) / 28 ,
A. 380
B. 350
C. 330
D. 310

... Answer is C

As per BODMAS rule, first we will solve the equation in bracket then we will go for division
= (9240)/28 = 330

04. 5004 / 139 - 6 ,
A. 25
B. 27
C. 29
D. 30

... Answer is D
As per BODMAS rule

05. 18800 / 470 / 20 ,
A. 1
B. 2
C. .3
D. 4

... Answer is B
Explanation

18800 / 470 / 20 = (18800 / 470) / 20 = 40 / 20 = 2

06. 7500 + (1250 / 50) ,
A. 7500
B. 7525
C. .7550
D. 8000

... Answer is B
Explanation

As per BODMAS rule first we will solve the terms in the

bracket then other

= 7500 + (25) = 7525

07. Simplify (31/10) * (3/10) + (7/5) / 20 ,
A. 0
B. 1
C. .10
D. 100

... Answer is B
Explanation

= (31/10) * (3/10) + (7/5) / 20

= (3.1) * (.3) + (1.4) / 20

= 0.93 + 0.07

= 1

08. Find the value of X :- X = (6/119) * (63/8) * (17/9) ,
A. 1/4
B. 2/4
C. .3/4
D. 4

... Answer is C
Explanation

09. a * b = 2a - 3b + ab, then 3*5 + 5*3 = ? ,
A. 20
B. 21
C. .22
D. 23

... Answer is C
Explanation

= 2(3)-3(5)+(3*5) + 2(5)-3(3)+(5*3)

= 6-15+15+10-9+15 = 31-9 = 22

10. 3034−(1002÷20.04)=? ,
A. 1964
B. 1984
C. .2964
D. 2984

... Answer is D
Explanation

11. The number of girls in a class are 7 times the number of boys, which value can never be the of total students ,
A. 40
B. 48
C. .24
D. 30

... Answer is D
Explanation

Let the boys are X, then girls are 7X, total = X+7X = 8X

So it should be multiple of 8, 30 is not a multiple of 8

12. 5.8 * 2.5 + 0.6 * 6.75 + 139.25= ? ,
A. 157.60
B. 147.80
C. .147.60
D. 157.80

... Answer is D
Explanation

13. 3640 ÷ 14*16 + 340 = ? ,
A. 3500
B. 4500
C. .1500
D. 2500

... Answer is B
Explanation

14. The value of 25.25 – 23.23 + 24.24 is ,
A. 26
B. 26.26
C. .2.5
D. 22.22

... Answer is B

15. If a*b = 2a+3b, then the value of 2*3 + 3*4 is ,
A. 24
B. 31
C. .32
D. 34

... Answer is B

16. If a = 4.36, b = 2.39, c = 1.97, then the value of a3-b3-c3-3abc is ,
A. 3.94
B. 2.39
C. .0
D. 1

... Answer is C

17. Find the value of (X) in the given equation ? …..:- 35% of 1500 + X = 45% of 4200 – 320 ,
A. 910
B. 980
C. 1012
D. 1045

... Answer is D
Explanation

35% of 1500 + X = 45% of 4200 – 320

(35/100 * 1500) + X = (45/100 * 4200) – 320

525 + X = 1890 – 320

X = 1890 – 320 – 525

X = 1890 – 845

X = 1045

18. If 5x + y = 15, 5y + z = 25 and 2z + x = 2, what is the value of x ? ,
A. 2
B. 7
C. 9
D. 12

... Answer is A
Explanation

19. If a - b = 3 and a2 + b2 = 29, find the value of ab. ,
A. 10
B. 12
C. 15
D. 18

... Answer is A
Explanation

2ab = (a2 + b2) - (a - b)2

2ab = 29 - 9

2ab = 20

ab = 10

20. A man has Rs.480 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has ? ,
A. 45
B. 60
C. 75
D. 90

... Answer is D
Explanation

Let number of notes of each denomination be x.

Then x + 5x + 10x = 480

16x = 480

x = 30.

Hence, total number of notes = 3x = 90.

21. If a - b = 3 and a2 + b2 = 29, find the value of ab. ,
A. 10
B. 12
C. 15
D. 18

... Answer is A
Explanation

2ab = (a2 + b2) - (a - b)2

= 29 - 9 = 20

ab = 10.

22. A fires 5 shots to B's 3 but A kills only once in 3 shots while B kills once in 2 shots. When B has missed 27 times, A has killed: ,
A. 30 Birds
B. 60 Birds
C. 72 Birds
D. 90 Birds

... Answer is A
Explanation

23. 60 + 5 * 12 / (180/3) = ? ,
A. 60
B. 120
C. 13
D. 61

... Answer is D
Explanation

60 + 5 * 12 / (180/3) = 60 + 5 * 12 / (60)

= 60 + (5 * 12)/60 = 60 + 1 = 61.

24. 9000 + 16 2/3 % of ? = 10500 ,
A. 1500
B. 1750
C. 9000
D. 7500

... Answer is C
Explanation

9000 + 16 2/3 % of ? = 10500 => 9000 + 50/3 % of ? = 10500

50/(3 * 100) of ? = 1500 => ? = 1500 * 6.

? = 9000

25. 6 2/3 * 9 3/5 * 2 1/3 + 1 1/3 = ? ,
A. 150 1/3
B. 150 2/3
C. 149 2/3
D. None of the above

... Answer is D
Explanation

26. 1860 + 4/7 of 21.21 - 41.4 = ? ,
A. 1830.72
B. 1829.28
C. 1831.72
D. 1831.72

... Answer is A
Explanation

1860 + 4/7 of 21.21 - 41.4 = 1860 + 4(3.03) - 41.4

= 1860 + 12.12 - 41.4 = 1872.12 - 41.4

= 1830.72

27. 7 + 5 - (3/2 * 1/4) of 2/7 + 7/2 * 1/6 equals - ,
A. 12 3/88
B. 12 25/224
C. 1831.72
• D. 12 1/224

... Answer is B
Explanation

7 + 5 - (3/2 * 1/4) of 2/7 + 7/2 * 1/16

= 7 + 5 - (3/2 * 1/4) * 2/7 + 7/2 * 1/16 = 7 + 5 - 3/28 + 7/32

= 12 + 3/28 + 7/32 = 12 + (7 * 7 - 3 * 8)/224

= 12 + 25/224 = 12 25/224

28. (50 - ?/29)% of 4200 = 3√196 ,
A. 1350
B. 1450
C. 1550
D. 1421

... Answer is D
Explanation

(50 - ?/29)% of 4200 = 3√196

29. (22 * 495 + 891 * 44) / (33 * 176 + 55 * 264) = ? ,
A. 1
B. 2
C. 69/28
D. 66/17

... Answer is C
Explanation

(22 * 495 + 891 * 44) / (33 * 176 + 55 * 264) = (22 * 33 * 15 + 9 * 99 * 2 * 22) / (33 * 22 * 8 + 5 * 11 * 22 * 12)

= (22 * 33 * 15 + 22 * 33 * 54) / (33 * 22 * 8 + 33 * 22 * 20) = [22 * 33(15 + 54)] / [33 * 22(8 + 20)] = 69/28

30. (242 + 144 / 3) / 36 = ? ,
A. 54
B. 34
C. 44
D. None of the above

... Answer is D
Explanation

31. 8.008 + 0.8 + 80.8 + 800.8 + 0.08 = ? ,
A. 888.888
B. 889.688
C. 890.488
D. 980.488

... Answer is C
Explanation

8.008 + 0.8 + 80.8 + 800.8 + 0.08

= 8 + 0.008 + 0.8 + 80 + 0.8 + 800 + 0.8 + 0.08

= 8 + 80 + 800 + 0.008 + 0.08 + 0.8 + 0.8 + 0.8

= 888 + 2.488 = 890.488

32. 2 1/3 + 4 1/6 - 2 2/3 - 1 1/2 = 2 ?/3 ,
A. 1
B. 2
C. 2/3
D. 4

... Answer is A
Explanation

2 1/3 + 4 1/6 - 2 2/3 - 1 1/2 = 2 ?/3

= 7/3 + 25/6 - 8/3 - 3/2 = (14 + 25 - 16 - 9)/6 = 7/3 = 2 1/3

? = 1

33. 184 * 216 - 81 + 119 / 0.7 = ? ,
A. 39493
B. 39394
C. 94934
D. None of the above

... Answer is D
Explanation

34. 6 of 5/8 / 5/8 - 1/8 = ? ,
A. 6 1/8
B. 5 3/4
C. 6 3/4
D. 5 7/8

... Answer is D
Explanation

6 of 5/8 / 5/8 - 1/8

30/8 * 8/5 - 1/8 = 6 - 1/8 = 5 7/8

35. 64309 - 8703 + 798 - 437 = ? ,
A. 55606
B. 55697
C. 55967
D. 73373

... Answer is C
Explanation

64309 - 8703 + 798 - 437 => 65107 - 9140 = 55967

36. 25 * 25 / 25 + 15 * 40 = ? ,
A. 125
B. 525
C. 25/64
D. 625

... Answer is D
Explanation

(25 * 25)/25 + 15 * 40 = 25 + 600 = 625

37. (64 + 9 + 9) / (2 * 20 + 1) = ? ,
A. 1
B. 3/2
C. 2
D. 5/2

... Answer is C
Explanation

(64 + 9 + 9) / (2 * 20 + 1) = 82/41 = 2

38. 25 2/5 + 8 4/5 + 4/5 = ? ,
A. 34
B. 35
C. 36
D. 37

... Answer is B
Explanation

25 2/5 + 8 4/5 + 4/5 = 34 4/5 ≡ 35

39. 109.13 * 34.14 - 108.12 * 33 = ? ,
A. 130
B. 135
C. 138
D. 142

... Answer is D
Explanation

109 * 34 - 108 * 33

= 3706 - 3564 = 142

40. 45/100 * 125 + 22.22 = ? ,
A. 78
B. 76
C. 74
D. 72

... Answer is A
Explanation

45/100 * 125 + 22.22 = 56.25 + 22.22 = 78.47

41. (180/37 of 14.8) / (17/60.1 of 180.30) = ? ,
A. 1.4
B. 1.6
C. 1.5
D. 1.2

... Answer is A
Explanation

(180/37 of 14.8) / (17/60.1 of 180.30) = 72/51 = 24/17 = 1.41

42. 21345 * 45 = 4270 * ? ,
A. 215
B. 235
C. 225
D. 255

... Answer is C
Explanation

? = (21345 * 45) / 4270

? = 225

43. 183.21 + 2.9928 * 66.84 = ? ,
A. 383
B. 372
C. 380
D. 374

... Answer is A
Explanation

? = 183.21 + 200 = 383

44. (743.30)2 = ? ,
A. 551400
B. 551500
C. 542500
D. 552500

... Answer is D
Explanation

(743.30)2 = 552500

45. (332% of 2113) / 42 = ? ,
A. 167
B. 154
C. 162
D. 181

... Answer is A
Explanation

(3.32/100 * 2113) * 1/42 = (70.1516) * 1/42 = 167

46. 58978 / 363.94 * 11.02 = ? ,
A. 1580
B. 1680
C. 1780
D. 1880

... Answer is C
Explanation

59000 / 364 * 11 = ?

=> ? = 162 * 11 = 1782 = 1780

47. (84 ÷ 14 ÷ 2 ÷ 9) * ? = 33⅓ ,
A. 100
B. 300
C. 90000
D. 10000

... Answer is A
Explanation

(84 ÷ 14 ÷ 2 ÷ 9) * ? = 33⅓

=> (6 ÷ 2 ÷ 9) * ? = 100 / 3

=> 3 / 9 * ? = 100 / 3

=> ? = 100

48. (6 - 2 * 3 + 6) / (2 + 6 * 3 - 4) = ? ,
A. 9/8
B. 3/10
C. 3/5
D. 3/8

... Answer is D
Explanation

(6 - 2 * 3 + 6) / (2 + 6 * 3 - 4) = (6 - 6 + 6) / (2 + 18 - 4)

= 6/16 = 3/8

49. 12.5 + 10 1/4 of 100 ÷ 10% of 10 = ? ,
A. 1037.50
B. 1157.50
C. 103.75
D. 1038

... Answer is A
Explanation

12.5 + 10 1/4 of 100 ÷ 10% of 10

= 12.5 + 41/4 of 100 ÷ 10/100 of 10

= 12.5 + 41(25) ÷ 1 = 12.5 + 1025 = 1037.5

50. 421 * 0.9 + 130 * 101 + 10000 = ? ,
A. 33500
B. 23500
C. 22500
D. 24500

... Answer is B
Explanation

421 * 0.9 + 130 * 101 + 10000

= 378.9 + 1313 + 10000 = 23508.9 = 23500