Number System A gardener wants to plant trees in his garden in such a way that the number of trees in each row should be the same. If there are 4 rows or 5 rows or 6 rows, then no tree will be left. Find the least 30 60 120 240 30 60 120 240 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The least number of trees that are required = LCM(4, 5, 6) = 60.
Number System If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 77/73 73/77 93/77 83/77 77/73 73/77 93/77 83/77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
Number System I. 3x2-14x + 8 = 0 II. 2y2 - 1 7 y + 36 = 0 if x <= y if x < y if x >= y if x > y if x <= y if x < y if x >= y if x > y ANSWER EXPLANATION DOWNLOAD EXAMIANS APP l. 3x2 - 12x - 2x + 8 = 0or 3x(x - 4) -2 (x -4) = 0∴ x = 4, 2/3ll. 2y2 - 8y - 9y + 36 = 0or 2y (y - 4) -9 (y - 4) = 0or (2y - 9) (y - 4) = 0∴ y = 4, 9/2
Number System If the numerator of a fraction is decreased by 12.5% and the denominator is increased by 180% the resultant fraction is 1/2. What is the original fraction ? 8/5 3/5 7/5 1/5 8/5 3/5 7/5 1/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the original fraction be x/y.∴ x x 87.5/100/y x 280/100 = 1/2or 87.5x/280y = 1/2∴ 175x = 280y∴ x/y = 280/175 = 8/5
Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 75 35 89 91 75 35 89 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1092 1200 1082 1192 1092 1200 1082 1192 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS