Question
The wheel of an engine 5 (1/9) meters in circumference
makes five revolutions in 4 seconds. Find the speed of the train in km per hour.Solution
5 revolution = 4 seconds Then, 1 revolution = 4/5 seconds Speed = Distance/Time = [(46 × 5 )/(9 × 4)] × (18/5) = 23 km/hr
Which one of the following numbers is divisible by 11?
Two positive numbers differ by 1280. When the greater number is divided by the smaller number, the quotient is 7 and the remainder is 50. The greater nu...
Find the number of prime factors of 300?
The following dataset represents the examination scores achieved by 10 students:
36, 91, 80, 77, 64, 80, 45, 56, 41, 96
Find the median of...
- 25% of 36% of 960 = m + 21.6, find the total of squares of each digit in ‘m’.
Find the range of the given data:
45, 67, 89, 32, 21, 77, 53, 64
 Divide 54 into 4 parts such that if the first is increased by 2, the second is decreased by 2, the third is multiplied by 2 and the fourth divided by ...
Product of two consecutive positive even numbers is 120. Find the sum of the digits of the two numbers.Â
Find remainder when 7¹³ is divided by 100.
Find the unit digit of the product 127 × 137 × 413 × 291 × 342 × 533 × 342.
