Number System If the L.C.M of two numbers is 750 and their product is 18750, find the H.C.F of the numbers. 125 30 50 25 125 30 50 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP H.C.F = (Product of the numbers) / (Their L.C.M) = 18750/750 = 25.
Number System The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers? 92 29 Cannot be determined 70 92 29 Cannot be determined 70 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and units digit by y.Then,(10x + y) - (10y + x) = 639(x - y) = 63x - y = 7Thus, none of the numbers can be determined.
Number System The sum of the present age of a father and a son is 60 years. Five years before, the age of the father was four times that of son. What is the present age of the son ? 15 years 18 years 21 years 25 years 15 years 18 years 21 years 25 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the father's age be x and son's age yTherefore, x + y = 60 ....................(i)Five years back, (x - 5) = 4 (y - 5)x - 4y = - 15 ......................(2)Solving (1) and (2), x = 45 and y = 15
Number System 64% of 2650+40% 0f 320=? 2096 1578 1247 1824 2096 1578 1247 1824 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System In a division sum, the quotient is 120, the divisor 456 and the remainder 333, find the dividend? 5553 50553 55053 56053 5553 50553 55053 56053 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 120 * 456 + 333 = 55053
Number System The sum of two numbers is 25 and their difference is 13. Find their product. 315 325 114 104 315 325 114 104 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then x + y = 25 and x - y = 13.x = 19; y = 6xy = 19 * 6 = 114
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