Number System {(742)² ÷ 36} ÷ 2 = ? 420.5 422.5 421.5 423.5 420.5 422.5 421.5 423.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (174 x 174/36) ÷ 2 = 841/2 = 420.5
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1280 1240 1260 1300 1280 1240 1260 1300 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number? 126 148 210 248 126 148 210 248 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126
Number System 3251 + 587 + 369 - ? = 3007 1375 1300 1200 1250 1375 1300 1200 1250 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4207 - x = 3007 Then, x = 4207 - 3007 = 1200
Number System In a two-digit number, if it is known that its unit's digit exceeds its ten's digit by 2 and that the product of the given number and the sum of its digits is equal to 144, then the number is: 26 42 24 46 26 42 24 46 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x. Then, unit's digit = x + 2. Number = 10x + (x + 2) = 11x + 2 Sum of digits = x + (x + 2) = 2x + 2 (11x + 2)(2x + 2) = 144 2x2 + 26x - 140 = 0 (x - 2)(11x + 35) = 0 x = 2Hence, required number = 11x + 2 = 24.
Number System On dividing number by 5, we get 3 as remainder. What will be the remainder when the square of this number is divided by 5? 2 0 4 1 2 0 4 1 ANSWER DOWNLOAD EXAMIANS APP
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