Number System If 35% of a number is 899.5, what is 68% of that number ? 2247.6 1847.6 1747.6 1547.6 2247.6 1847.6 1747.6 1547.6 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 √9216 + √15376 = ? 227 231 224 220 227 231 224 220 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √9216 + √15376= 96 + 124= 220
Number System If the sum of four consecutive numbers is 370, which the following is the third lowest number among them 91 90 89 92 91 90 89 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four consecutive numbers be x, (x + 1), (x + 2), (x + 3) thenx + (x + 1) + (x + 2) + (x + 3) = 370= 4x + 6 = 370∴ x = 364/4 = 91∴ third lowest number among them = x + 1= 91 + 1 = 92
Number System What is the average of the following set of numbers ? 173, 192, 198, 204, 211, 223, 227 204 222 210 234 204 222 210 234 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Avg = 173 + 192 + 198 + 204 + 211 + 223 + 227/7 = 1428/7 = 204
Number System In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient? 0 12 13 20 0 12 13 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = (12 * 35) = 420Correct quotient = 420/21 = 20
Number System If the sum of five consecutive even numbers A, B, C, D and E is 130, what is the product of A and E ? 780 660 840 720 780 660 840 720 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive even numbers be A = 2x, B = 2x + 2, C = 2x + 4, D = 2x + 6 and E = 2x + 8= A + B + C + D + E = 130= 10x + 20 = 130∴ x = 130 - 20/10 = 11Therefore, product of A and E= 22 x 30 = 660
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