Number System What is the value of ? in the following equations ? 72/? = ?/50 100 80 60 40 100 80 60 40 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
Number System Find the greatest number which leaves the same remainder when it divides 25, 57 and 105. 18 16 8 12 18 16 8 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.
Number System In how many different ways can the letters of the word ANATOMY be arranged ? 2504 2510 2520 2508 2504 2510 2520 2508 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Here total letters are 7 but A comes twice.Therefore, Numbers of arrangements = 7!/2! = 2520
Number System On dividing number by 56, we get 29 as remainder. On dividing the same number by 8, what will be the remainder? 4 5 7 6 4 5 7 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let x be the number and y be the quotient. Then, x = 357 * y + 39= (17 * 21 * y) + (17 * 2) + 5= 17 * (21y + 2) + 5.Required remainder = 5.
Number System The sum of 8 consecutive odd numbers is 656. Also average of four consecutive even numbers is 87. What is the sum of the smallest odd number and second largest even number ? 167 160 158 163 167 160 158 163 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Average of 8 consecutive odd numbers = 656/8 = 82∴ Fourth number = 82 - 1 = 81∴ First numbers = 75Average of 4 even numbers = 87∴ Second even number = 87 - 1 = 86Second largest even number = 88∴ Required sum = 75 + 88 = 163
Number System What is the value of 8/11 of 5/7 of 96% of 28875 ? 12900 13800 14400 15400 12900 13800 14400 15400 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = 8 x 5 x 96 x 28875/11 x 7 x 100 = 14400
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