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Number System

Number System
Of the three numbers, second is twice the first and is also thrice the third. If the average of the three numbers is 44, the largest number is

44
38
56
72

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

72

Number System
Find the smallest number which when divided by 13 and 16 leaves respective remainders of 2 and 5.

197
207
187
219

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let 'N' is the smallest number which divided by 13 and 16 leaves respective remainders of 2 and 5.Required number = (LCM of 13 and 16) - (common difference of divisors and remainders) = (208) - (11) = 197.

Number System
Simplify the 121 * 175 + 363 * 275

328100
363000
None of these
316600

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

121 * 175 + 363 * 275 => 121 * 175 + 121 * 3 * 275121 * 175 + 121 * 825= 121 * (175 + 825) = 121000

Number System
If A + B = 30 and AB = 94, What is the value of A² + B² ?

712
625
824
920

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94                                = 900 - 188 = 712

Number System
What should come in the place of ' ? ' in the following number series ? 2, 5, 9, 19, 37, ?

76
78
75
77

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2 x 2 + 1 = 5;5 x 2 - 1 = 99 x 2 + 1 = 19: 19 x 2 - 1 = 3737 x 2 + 1 = 75

Number System
What is the sum of all even numbers from 1 to 701?

122500
122550
123850
122850

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

700/2 = 350350 * 351 = 122850

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