Number System If (35)² is added to the square of a number the answer so obtained is 1394. What is the number ? 17 11 15 13 17 11 15 13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² + (35)² = 1394Therefore, x² = 1394 - (35)² = 1394 - 1225 = 169Therefore, x = √169 = 13
Number System If 35% of a number is 899.5, what is 68% of that number ? 2247.6 1547.6 1747.6 1847.6 2247.6 1547.6 1747.6 1847.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6
Number System Which one of the following represents the sum of the first n even numbers? N(N + 1) N(N – 1) N2+ 1 N2 N(N + 1) N(N – 1) N2+ 1 N2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP N (N + 1)
Number System The difference between two integers is 5. Their product is 500. Find the numbers. 21, 26 15, 20 30, 25 20, 25 21, 26 15, 20 30, 25 20, 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.
Number System Pick the wrong number from the given number series. 3,4,10,33,135,685,4116 10 135 685 33 10 135 685 33 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The correct number is 136.3 x 1 + 1 = 44 x 2 + 2 = 1010 x 3 + 3 = 3333 x 4 + 4 = 136136 x 5 + 5 = 685685 x 6 + 6 = 4116
Number System On dividing number by 357, we get 39 as remainder. On dividing the same number by 17, what will be the remainder? 3 0 5 11 3 0 5 11 ANSWER DOWNLOAD EXAMIANS APP
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