Number System {3√4913}² = ? 289 121 225 333 289 121 225 333 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (3√4913)² = (17)² = 289
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 ? 5/9 4/9 6/9 3/9 5/9 4/9 6/9 3/9 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 If the L.C.M of two numbers is 750 and their product is 18750, find the H.C.F of the numbers. 125 25 30 50 125 25 30 50 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP H.C.F = (Product of the numbers) / (Their L.C.M) = 18750/750 = 25.
Number System The sum of the ages of a son and father is 65 years. After 5 years the age of father will be double of the age of son. What is the age of son ? 17 years 18 years 19 years 20 years 17 years 18 years 19 years 20 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the age of the son be x and the age of the father be y.Therefore, x + y = 65 ..........(i)or, 2 x (x + 5) = (y + 5)or, 2x + 10 = y + 5or, 2x - y = 5 ...................(ii)From equations (i) and (ii), x = 20, y = 45
Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N(N + 1) N2 + 1 N2 N(N + 1)/2 N(N + 1) N2 + 1 N2 N(N + 1)/2 ANSWER DOWNLOAD EXAMIANS APP
Number System How many numbers up to 200 are divisible by 2 and 3 both? 29 27 33 35 29 27 33 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 200/6 = 33 2/6 => 33 Numbers
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