Number System (2560 x 1.4) +(7400 x 0.6) =? 7234 6543 9160 8024 7234 6543 9160 8024 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8024
Number System Radha's present age is three years less than twice her age 12 years ago. Also the respective ratio between Raj's present age and Radha's present age is 4 : 9. What will be Raj's age after 5 years ? 14 years 16 years 17 years 15 years 14 years 16 years 17 years 15 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let Radha's present age = x years.∴ x = 2 (x = 12) - 3= x = 2x - 24 - 3= x = 27∴ Raja's present age = 4/9 x 27= 12 years ∴ Raja's age after 5 years = 12 + 5 = 17 years
Number System √343 = ? 19 18 21 20 19 18 21 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √343 = 18
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 35/8 7/32 12/35 1/35 35/8 7/32 12/35 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 Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 2 None 6 4 2 None 6 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System 450% of a number is 4725. What is 82% of that number ? 871 851 841 861 871 851 841 861 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 450/100 = 4725= x = 4725 x 100/450 = 1050∴ 82% of 1050 = 1050 x 82/100= 861
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