Q1: 5÷√5=?
(a) √5
(b) 5
(c) 25
(d) 0.05
Ans: (b)
Applying BODMAS rule: 5 ÷ √5 = 5/√5 = √5
Q2:
(a) 2(1/7)
(b) 1/7
(c) 6/7
(d) None of these
Ans: c
= (1/8) + (3/7) - (1/8) + (3/7) = (6/7)
Q3: Solve 5(1/2) + 6(1/2) - 8(1/4)
(a) 2(3/4)
(b) 3(3/4)
(c) 2(1/4)
(d) None of these
Ans: (b)
5(1/2) + 6(1/2) - 8(1/4) = (5+6-8) + ((1/2) + (1/2) - (1/4)) = 3(3/4)
Q4: 22 – [9 – {6 – (10 ]
(a) 12
(b) 14
(c) 10
(d) 8
Ans: c
= 22 - [9 - {6 -) - (10 – 1)}] = 22 - [ 9 - { 6 - 9}]
= 22 - [9 - {-3}] = 22 - [9 + 3] = 22 - [12] = 22 - 12 = 10
Q5: 103 - 33 - 23/102 =?
(a) 9.5
(b) 9.62
(c) 9.61
(d) 9.6
Ans: a
103 - 33 - 23/102
= 1000-27-8/100
=965/100 = 9.65
Q6: (14)2 – (.06)2
(a) 194.36
(b) 193.36
(c) 195.36
(d) None of these
Ans: d
(14)2 – (.06)2
= 196 - .0036 = 195 .9964
Q7: 37.5% of 800 – 6.25% of 1600 =?
(a) 200
(b) 250
(c) 275
(d) 236
Ans: (a)
37.5% of 800 - 6.25% of 1600
3/8 × 800 - 1/16 × 1600 = 300 – 100 = 200
Q8: (√289/34) × (68/√1156) × (√961/62) = ?
(a) 1/2
(b) 3/4
(c) 5/6
(d) 7/8
Ans: a
(√289/34) × (68/√1156) × (√961/62)
= (17/34) × (68/34) × (31/62) = 1/2
Q9: 63 + 83 -73 / 62 + 83 - 72 = ?
(a) 287/385
(b) 223/167
(c) 385/51
(d) 231/378
Ans: c
63 + 83 -73 / 62 + 83 - 72
= (216+512-343)/(36+64-49)
= (728-343)/(100-49)
= 385/51
Q10: (19×9+31×10+32×11)/(233.25×2-50) = ?
(a) 4
(b) 8
(c) 6
(d) 2
Ans: (d)
(19×9+31×10+32×11)/(233.25×2-50)
= 171+310+350/466.5-50
= 833/416.5
= 2
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1. What is simplification in mathematics? |
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