Number System How many figures are required to number the pages the pages of a book containing 365 pages? 967 897 977 987 967 897 977 987 ANSWER DOWNLOAD EXAMIANS APP
Number System 75% of 250 - ?% of 380 = 54.5 31 35 33 39 31 35 33 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 250 x 75/100 - 380 x ?/100 = 54.5= 250 x 75 - 380 x ?= 54.5 x 100= 18750 - 380 x ?= 5450= 380 x? = 18750 - 5450= 13300= ? = 13300/380 = 35
Number System If the difference between a number and its 2/5 is 240, find the number. 400 480 360 440 400 480 360 440 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore x - 2x/5 = 240, Therefore, 3x/5 = 240Therefore, x = 240x5/3 = 400
Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 56 52 48 36 56 52 48 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
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 21 years 15 years 25 years 18 years 21 years 15 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 Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be? 7, 8 10, 5 6, 9 9, 6 7, 8 10, 5 6, 9 9, 6 ANSWER DOWNLOAD EXAMIANS APP
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