Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 48 52 36 56 48 52 36 56 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
Number System The Twenty-First Century will start on January 1 in the year 2000 2100 2001 2101 2000 2100 2001 2101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2001
Number System On dividing a number by 68, we get 269 as quotient and 0 as remainder. On dividing the same number by 67, what will be the remainder? 2 3 1 0 2 3 1 0 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = 269 * 68 + 0 = 1829267) 18292 (273 18291 -------- 1Required number = 1.
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 180 12 28 160 180 12 28 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System Find the least number when successively divided by 2, 3 and 7 leaves remainders 1, 2 and 3 respectively? 67 75 65 61 67 75 65 61 ANSWER DOWNLOAD EXAMIANS APP
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 25/144 12/5 5/12 144/25 25/144 12/5 5/12 144/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
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