List of Mathematical Series Questions for Practice
A principal increase by 50 percent in five years at the rate of simple interest. What will be the compound interest for 3 years at Rs 20,000 with the same interest rate?
(A) 5760
(B) 6620
(C) 3310
(D) 2880
Correct Answer : B
The simple interest on an amount at the rate of 7 percent for five years is Rs 700. So how much is the principal?
(A) 1800
(B) 1600
(C) 2000
(D) 2100
Correct Answer : C
If four coins are tossed together, what is the probability of at least getting 2 heads?
(A) 13\16
(B) 11\16
(C) 9\16
(D) 15\16
(E) None of these
Correct Answer : B
In how many different ways can the letters of the word ‘DESIGN’ be arranged so that the vowels are at the two ends?
(A) 48
(B) 72
(C) 36
(D) 24
(E) None of these
Correct Answer : A
30 dozen walnuts were purchased for Rs. 14400 and 32 packets of walnuts (20 walnuts in each packet) were purchased for Rs. 57600. If a packet of Akharato was sold for five rupees in a pack at Rs. 432, what would be the profit percentage?
(A) 10 %
(B) 25 %
(C) 20 %
(D) 15 %
Correct Answer : C
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