Number System 2536+4851—?=3450+313 5243 4567 6784 3624 5243 4567 6784 3624 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3624
Number System A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is: 24 81 18 42 24 81 18 42 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's and unit's digit be x and 8/x respectively. Then, (10x + 8/x) + 18 = 10 * 8/x + x 9x2 + 18x - 72 = 0 x2 + 2x - 8 = 0 (x + 4)(x - 2) = 0 x = 2 So, ten's digit = 2 and unit's digit = 4. Hence, required number = 24.
Number System A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by: 3 5 11 9 3 5 11 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and unit's digit be y. Then, number 10x + y.Number obtained by interchanging the digits = 10y + x.(10x + y) + (10y + x) = 11(x + y)which is divisible by 11.
Number System What is 432 times 119 ? 53408 50408 52408 51408 53408 50408 52408 51408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
Number System 3√68921 = ? 21 31 51 41 21 31 51 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√68921= 3√41 x 41 x 41= 41
Number System A bag contains eighteen 25-paise coins, seventeen 50-paise coins, twentytwo one-rupee coins, nine 2-rupee coins and three 5-rupee coins. What is the total amount in the bag (Ans in rupees) ? Rs. 68 Rs. 79 Rs. 62 Rs. 74 Rs. 68 Rs. 79 Rs. 62 Rs. 74 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total = 18/7 + 17/2 + 22 + 9 x 2 + 3 x 5 = 4.5 + 8.5 + 22 + 18 + 15 = Rs 68
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