10 Important Math MCQs for most of the competitive exams
Que 1: The mark up%,discount %, and profit %are the ratio 16: 5 : 7 . If article is marked as 288 Rs higher than the CP, Th en find the amount of discount given(in Rs) ?
(A) 216
(B) 189
(C) 144
(D) 162
Correct Ans: D
Que 2: Three numbers are in the ratio 2 :3 : 4 and their H.C.F. is 12. The numbers is :
(A) 24, 36, 48
(B) 20, 25, 30
(C) 10, 15, 20
(D) 12, 24, 36
Correct Ans: A
Que 3: Two fractions are such that their product is 9/10 and sum is 77/40 what is the two fractions?
(A) 2/5, 9/4
(B) 2/5, 9/4
(C) 4/5, 9/8
(D) 1/5, 9/2
Correct Ans: C
Que 4: If 2 shirts are offered free on purchase of 3 shirts priced Rs.600 each, then what will be the effective discount in each shirt ?
(A) 25 percent
(B) 66.67 percent
(C) 30 percent
(D) 40 percent
Correct Ans: D
Que 5: If the numerator of a fraction is increased by 5, then fraction becomes 5/4 and if the denominator is increased by 2 the fraction becomes 1/2. Find the original fraction.
(A) 1/8
(B) 3/8
(C) 5/8
(D) 7/8
Correct Ans: C
Que 6: A boat covers a certain distance downstream in 4 h but takes 6 h to return upstream to the starting point. If the speed of the stream is 2 km/h, find the speed of the boat in still water.
(A) 5 km/h
(B) 10 km/h
(C) 8 km/h
(D) 11 km/h
Correct Ans: B
Que 7: 16 men can complete a work in 16 days. All men started the work and after 4 days 16 more men joined them. In how many days the remaining work will be completed?
(A) 6
(B) 8
(C) 9
(D) 3
Correct Ans: A
Que 8: If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same in 2 days, what is the time taken by 15 men and 20 boys in doing the same type of work ?
(A) 4
(B) 7
(C) 5
(D) 6
Correct Ans: A
Que 9: In how much time would the simple interest on a certain sum be 0.125 times the principle at 10% per annum ?
(A) 1¾ yr
(B) 2¾ yr
(C) 1¼ yr
(D) 2¼ yr
Correct Ans: C
Que 10: The HCF and LCm of two numbers are 21 and 4641 respectively. If one of the numbers lies between 200 and 300, find out the two numbers.
(A) 273, 357
(B) 215, 315
(C) 210, 252
(D) 210, 340
Correct Ans: A
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