Number System 4550 ÷ 25% of ? = 130 130 140 135 125 130 140 135 125 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4550 ÷ ? x 25/100 = 130= 4550 ÷ ?/4 = 130= 4550 x 4/? = 130= ? x 130 = 4550 x 4= ? = 4550 x 4/130 = 140
Number System The sum of the present age of a father and a son is 60 years. Five years before, the age of the father was four times that of son. What is the present age of the son ? 18 years 15 years 21 years 25 years 18 years 15 years 21 years 25 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the father's age be x and son's age yTherefore, x + y = 60 ....................(i)Five years back, (x - 5) = 4 (y - 5)x - 4y = - 15 ......................(2)Solving (1) and (2), x = 45 and y = 15
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 16 10 14 12 16 10 14 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System Supply the missing figure : 1, 4, 9, 16, 25 .... 49 36 42 23 16 36 42 23 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 36
Number System 6.4 x 8.5 x 25/3.2 x 12.5 = ? 5.6 2.3 3.4 4.5 5.6 2.3 3.4 4.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
Number System √360 - 225 x 2 + 379 = ? 19 17 20 18 19 17 20 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √360 - 225 x 2 + 379 = √360 - 450 + 379 = √289= 17
EXAMIANS