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Number System

Number System
Find the least value of 3x + 4y if x2y3 = 6.

6
3
7
10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

10

Number System
Find the number which multiplied by 15 is increased by 196.

28
26
14
20

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x. Then,15x - x = 196x = 14

Number System
The product of two consecutive odd numbers is 4095 What is the greater number ?

65
61
69
74

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65

Number System
How many figures are required to number the pages the pages of a book containing 365 pages?

897
987
977
967

ANSWER DOWNLOAD EXAMIANS APP

Number System
In how many different ways can the letters of word "COLLEGE" be arranged ?

1280
1260
1300
1240

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Number of ways = 7!/2!2! = 1260(∵ L and E come twice)

Number System
Find the greatest four digit number which leaves respective remainders of 2 and 5 when divided by 15 and 24.

None of these
9125
9974
9565

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Since the difference between the divisors and the respective remainders is not constant, back substitution is the convenient method. None of the given numbers is satisfying the condition.

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