Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 2 4 6 None 2 4 6 None ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 720 510 640 860 720 510 640 860 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total six letters are there and hence the number of arrangements = 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System What should come in place of the question mark (?) in the given number series ? 888, 888, 444, 148, ?, 7.4 37 39 36 38 37 39 36 38 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let x be the missing number.Then888/888 = 1,888/444 = 2,444/148 = 3,148/x = 4= x = 148/4 = 37 and 37/7.4 = 5
Number System 8988 / 8 / 4 = ? 280.875 2247 561.75 4494 280.875 2247 561.75 4494 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8988 * 1/8 * 1/4 = 2247/8 = 280.875
Number System 5525 ÷ 17 = √? 105625 93025 99225 112225 105625 93025 99225 112225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 35 89 91 75 35 89 91 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
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