Number System Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers? 62, 18 64, 16 60, 20 65, 15 62, 18 64, 16 60, 20 65, 15 ANSWER DOWNLOAD EXAMIANS APP
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 5/9 4/9 6/9 3/9 5/9 4/9 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 Which is the smallest fractions among the following ? 11/13 15/19 27/31 13/15 11/13 15/19 27/31 13/15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 11/13 = 0.8461,13/15 = 0.8666,27/31 = 0.87,15/19 = 0.789
Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 22 23 21 20 22 23 21 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System The sum of the two numbers is 12 and their product is 35. What is the sum of the reciprocals of these numbers? 1/35 12/35 7/32 35/8 1/35 12/35 7/32 35/8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be a and b. Then,a + b = 12 and ab = 35.(a + b)/ab = 12/35= (1/b + 1/a) = 12/35Sum of reciprocals of given numbers = 12/35.
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 160 180 12 28 160 180 12 28 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
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