Number System A, B, C, D and E are consecutive even numbers respectively. The average of 5 numbers is 82. What is the product of C and E ? 6363 6383 6353 6373 6363 6383 6353 6373 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4 = 5 x 82= 5x + 10 = 410 = 5x = 400= x = 400/5 = 80 ∴ A = 80C = 82and E = 84= C x E = 82 x 84 = 6383
Number System A number exceeds by 25 from its 3/8 part. Then the number is? 39 35 40 32 39 35 40 32 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the value of ? in the following equations ? 72/? = ?/50 60 100 80 40 60 100 80 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 How many figures are required to number the pages the pages of a book containing 365 pages? 897 967 987 977 897 967 987 977 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the least number to be subtracted from 696 to make it a perfect square? 20 16 1 71 20 16 1 71 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The numbers less than 696 and are squares of certain numbers are 676, 625.The least number that should be subtracted from 696 to make it perfect square = 696 - 676 = 20.
Number System The number of prime factors of (6)10×(7)17×(55)27 61 101 41 91 61 101 41 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 91
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