Number System 4.78% of 1255 + 3.24% of 440=0.5% of ? 11849 13849 12849 14849 11849 13849 12849 14849 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.5 x ?/100 = 4.78 x 1255/100 + 3.24 x 440/100= 59.989 + 14.256∴ ? = 74.245 x 100/0.5 = 14849
Number System The product of two consecutive odd numbers is 4623. What is the product of the next two consecutive odd numbers ? 5183 6782 8795 7745 5183 6782 8795 7745 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √4623 = 6767 x 69 = 4623∴ Required product = 71 x 73 = 5183
Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N(N + 1)/2 N2 N(N + 1) N2 + 1 N(N + 1)/2 N2 N(N + 1) N2 + 1 ANSWER DOWNLOAD EXAMIANS APP
Number System One-eighth of a number is 76. What will be 54% of the number ? 328.32 318.32 332.32 321.32 328.32 318.32 332.32 321.32 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, 1/8 of x = 76Therefore, x = 60854% of 608 = 608 x 54/100 = 328.32
Number System 4/6 of 6/5 of 5/7 of a number is 96. Find the number. 168 162 170 164 168 162 170 164 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 4/6 x 6/5 x 5/7 = 96∴ x = 96 x 6 x 5 x 7/4 x 6 x 5 = 168
Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 24 25 26 23 24 25 26 23 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
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