Number System 106 * 106 - 94 * 94 = ? 1906 1904 2000 2400 1906 1904 2000 2400 ANSWER DOWNLOAD EXAMIANS APP
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 If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 83/77 77/73 93/77 73/77 83/77 77/73 93/77 73/77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
Number System A number when multiplied by five times of itself give the value equal to 1445. What is the number ? 15 16 18 17 15 16 18 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17
Number System If the sum of five consecutive even numbers A, B, C, D and E is 130, what is the product of A and E ? 780 720 840 660 780 720 840 660 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive even numbers be A = 2x, B = 2x + 2, C = 2x + 4, D = 2x + 6 and E = 2x + 8= A + B + C + D + E = 130= 10x + 20 = 130∴ x = 130 - 20/10 = 11Therefore, product of A and E= 22 x 30 = 660
Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 75 77 76 78 75 77 76 78 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
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