Number System Two numbers have a H.C.F of 16 and a product of two numbers is 2560. Find the L.C.M of the two numbers? 170 140 150 160 170 140 150 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP L.C.M of two numbers is given by(Product of the two numbers) / (H.C.F of the two numbers) = 2560/16 = 160.
Number System Which choice provides the answer in the following : If 2 * 3 = 36, 5 * 4 = 400, 6 * 2 = 144, 3 * 3 = 81; then, 5 * 5 = ? 325 625 425 525 325 625 425 525 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 625
Number System In how many different ways can the letters of the word FORMULATE be arranged ? 362880 382880 372880 392880 362880 382880 372880 392880 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of letters = 9! = 9*8*7*6*5*4*3*2*1 = 362880
Number System Supply the missing figure : 2, 6, 12, 20, 30 ... 56 42 40 41 39 42 40 41 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 42
Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 46 47 44 45 46 47 44 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 69 61 74 65 69 61 74 65 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65
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