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Mathematical Series Questions for Competitive Exams

5 months ago 155.7K Views
Q :  

A person invests money in three different schemes for 6 years, 10 years and 12 years at 10%, 12% and 15% simple interest respectively. At the completion of each scheme, he gets the same interest. The ratio of his investments is-

(A) 6 : 3 : 2

(B) 2 : 3 :4

(C) 3 : 4 : 6

(D) 3 : 4 :2

Correct Answer : B

Q :  

Sapna borrowed a certain sum of money from Kavita under the following repayment scheme based on simple interest. 8% p.a. for the initial 2 years, 9.5% p.a. for the next 4 years, 11% p.a. for the next 2 years, 12% p.a. after the first 8 years. Find the amount which a sum of Rs. 9000 taken for 12 years becomes at the end of 12 years?

(A) Rs. 20160

(B) Rs. 22350

(C) Rs. 23470

(D) Rs. 24567

(E) None of these

Correct Answer : A

Q :  

Everybody in a room shakes hands with everybody else. The total number of hand-shakes is 55. The total number of persons in the room is:

(A) 11

(B) 12

(C) 8

(D) 14

(E) None of these

Correct Answer : A

Q :  

In how many different ways can letters of the word ‘SECOND’ be arranged?

(A) 720

(B) 120

(C) 5040

(D) 270

(E) None of the above

Correct Answer : A
Explanation :

Number of letter in word ‘SECOND’ =6
The number of ways can the letters of word be arranged =6×5×4×3×2×1=720


Q :  

If , the what is the value of x?

(A) 34

(B) 35

(C) 33

(D) 33.5

Correct Answer : A

Q :  

(A) 9

(B) 0.9

(C) 0.99

(D) 99

Correct Answer : C

Q :  

Greatest among the numbers
is

(A)

(B)

(C)

(D)

Correct Answer : A

Q :  

If then the value of is:

(A) 0.016

(B) 0.16

(C) 1

(D) 16

Correct Answer : A

Q :  

If 5a=3125, then the value of 5(a-3) is:

(A) 25

(B) 125

(C) 625

(D) 1625

Correct Answer : A

Q :  The C.P. of an article is 40% of the S.P. The percent that the S.P. is of C.P. is….

(A) 250%

(B) 240%

(C) 60%

(D) 40%

Correct Answer : A

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