Number System (4 86%of 6500) ÷ 36 =? 777.5 877.5 977.5 677.5 777.5 877.5 977.5 677.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 877.5
Number System A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number? 8 6 3.5 None of these 8 6 3.5 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8
Number System What least number must be subtracted from 2641 so that the remainder left, when divided by 10,15 and 25, is 7 in each case ? 94 87 84 81 94 87 84 81 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP LCM of 10, 15, 25 = 150When we drive 2641 by 150 the remainder is 91.But the remainder should be 7.So, the number to be subtracted from 2641 is 91 - 7 = 84.
Number System Find the least value of 3x + 4y if x2y3 = 6. 10 7 6 3 10 7 6 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
Number System In how many different ways can the letters of the word TEST' be arranged ? 8 16 10 12 8 16 10 12 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 The sum of three consecutive multiples of 3 is 72. What is the largest number? 21 27 36 24 21 27 36 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27.
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