Number System What is the sum of the local values of the digits 2, 3, 4, 5 in the number 2345? 2345 2435 2105 5243 2345 2435 2105 5243 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2000 + 300 + 40 + 5 = 2345
Number System If the of a two-digit number are interchanged, the number so obtained is greater than the original number by 18. If the sum of the two digits of the number is 14. What is the original number ? 66 68 62 64 66 68 62 64 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be 10x + y.No. formed by the interchange of digits = 10y + xWe have y - x = 2 .........(i)y + x = 14 .........(ii)Solving (i) and (ii), we get x = 6, and y = 8∴ the no. is 68.
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 7 11 5 3 7 11 5 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
Number System 74698 + 365 + 85213 + 95 = ? 160341 160371 160351 160361 160341 160371 160351 160361 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 74698 + 365 + 85213 + 95 = 160371
Number System 5358 * 51 = ? 273268 273258 273358 273348 273268 273258 273358 273348 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
Number System If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ? 111 131 101 121 111 131 101 121 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2 = 47765 - 33124Therefore x² = 14641, Therefore x = 121
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