Number System What should come in place of question mark (?)? 8 : 1 1 : : 72: 89 99 79 109 89 99 79 109 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let ? = xTherefore 8 : 11 : 72 : xTherefore x = (11 x 72) / 8 = 99
Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 510 720 860 640 510 720 860 640 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 Find the greatest four digit number which leaves respective remainders of 2 and 5 when divided by 15 and 24. 9974 9125 None of these 9565 9974 9125 None of these 9565 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Since the difference between the divisors and the respective remainders is not constant, back substitution is the convenient method. None of the given numbers is satisfying the condition.
Number System In an examination, 68% of the total examinees passed. If the number of failures is 248, the total number of examinees is 725 750 640 775 725 750 640 775 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Failed students are 32% which is 248.∴ Total = 24800/32 = 775
Number System A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number? 3.5 None of these 6 8 3.5 None of these 6 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8
Number System A number when divided by 221 gives a remainder 43, what remainder will be obtained by dividing the same number 17? 5 10 9 11 5 10 9 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 221 + 43 = 264/17 = 9 (Remainder)
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