Number System The average of five consecutive even numbers A, B, C, D and E is 42. What is the product of B and D ? 1760 2476 4589 3289 1760 2476 4589 3289 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A + B + C + D + E/5 = 42∴ C = 42, ∴ B = 40, ∴ D = 44∴ B x D = 40 x 44 = 1760
Number System 106 * 106 - 94 * 94 = ? 2000 1906 2400 1904 2000 1906 2400 1904 ANSWER DOWNLOAD EXAMIANS APP
Number System Find the average of the following set of scores 450, 1050, 12, 390, 143, 286, 550, 999 480 485 495 490 480 485 495 490 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Required average score = (450 + 1050 + 12 + 390 + 143 + 286 + 550 + 999) / 8 = 3880 / 8 = 485
Number System If one-seventh of a number is 55 then 40% of that number = ? 163 171 147 154 163 171 147 154 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x , Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154
Number System In how many different ways can the letters of the word TEST' be arranged ? 12 8 10 16 12 8 10 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12
Number System What is the remainder when 263251 is divided by 9? 3 1 6 8 3 1 6 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP If the sum of the digits of a number is divisible by 9, the number will be divisible by 9.2 + 6 + 3 + 2 + 5 + 1 = 19The nearest multiple of 9 is 18.19 - 18 = 1.
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