Number System Find the number which multiplied by 15 is increased by 196. 14 28 26 20 14 28 26 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,15x - x = 196x = 14
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 increased by 200% and the denominator by 300%, the fraction thus obtained is 1/36. What is the original fractions ? 3/9 4/9 5/9 6/9 3/9 4/9 5/9 6/9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fractions be x/yx + 200% of x/y + 300% of y = 1/3= x + 2x/y + 3y = 1/3= 3x/4y = 1/3Hence x/y = 4/9
Number System 20% of the total number of students in a school play football. How many students do not play football if the total number of students in the school is 7600 ? 6080 5976 6000 5800 6080 5976 6000 5800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1260 1240 1300 1280 1260 1240 1300 1280 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System Write the next number in the series : 14, 16, 13, 17, 12, 18, 11 .... 7 15 19 1 7 15 19 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 19
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