Number System If (74)² is added to the square of a number the answer so obtained is 7780. What is the number ? 50 47 48 49 50 47 48 49 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.or, x² + (74)² = 7780or, x² = 7780 - 5476 = 2304∴ x = 48
Number System 3√103820 x 3√274620 = ? 3065 3055 3045 3035 3065 3055 3045 3035 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3√103820 = 47 and 3√274620 = 65 ∴ ? = 47 x 65 = 3055
Number System Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: 6 10 4 5 6 10 4 5 ANSWER DOWNLOAD EXAMIANS APP
Number System Find the least number with which 16200 should be multiplied, to make it a perfect cube. 48 36 45 360 48 36 45 360 ANSWER DOWNLOAD EXAMIANS APP
Number System If all the fractions 3/10, 1/16, 4/11, 2/9, 1/7, 5/14 and 5/24 arranged in descending order of their values, then which one will be the third? 4/11 3/10 1/16 2/9 4/11 3/10 1/16 2/9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/10 = 0.3, 1/16 = 0.0625, 4/11 = 0.36, 2/9 = 0.22, 1/7 = 0.14, 5/14 = 0.36 and 5/24 = 0.214/11 > 5/14 > 3/10 > 2/9 > 5/24 > 1/7 > 1/163/10 will be the third.
Number System What is the remainder when 263251 is divided by 9? 1 6 8 3 1 6 8 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP If the sum of the digits of a number is divisible by 9, the number will be divisible by 9.2 + 6 + 3 + 2 + 5 + 1 = 19The nearest multiple of 9 is 18.19 - 18 = 1.
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