Number System 64% of 2650+40% 0f 320=? 1247 1824 2096 1578 1247 1824 2096 1578 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System 74698 + 365 + 85213 + 95 = ? 160361 160371 160341 160351 160361 160371 160341 160351 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 74698 + 365 + 85213 + 95 = 160371
Number System The difference between a two-digit number and the number obtained by interchanging its two digits is 45. The sum of the digit of the number is 9. What is the product of the two digits of the number? 15 13 14 12 15 13 14 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.Therefore, x + y = 9 ..................(i)10x + y - (10y + x) = 4510x + y - 10y - x = 45Therefore, x - y = 5 ..................(ii)From (i) and (ii), x = 7, y = 2Number = 72Therefore, = x x y = 7 x 2 = 14
Number System If the numberator of a fraction is increased by 50% and denominator by 20% the fraction become 9/15. What was the original fraction ? 6/7 3/5 12/25 13/25 6/7 3/5 12/25 13/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 6 4 None 2 6 4 None 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System The difference between the two digit number and the number obtained by interchanging its digits is 54. The difference between the digits is? 4 6 1 Nothing can be said. 4 6 1 Nothing can be said. ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (10x + y) – (10y + x) = 54x – y = 6
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