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Start learning 50% faster. Sign in nowSpeed of train = (Length of train + Length of Platform)/Required time Length of train = 280 m Crossing time of platform = 2 × 60 = 120 sec Length of platform = 280 × 2 = 560 m Let the speed of train be x. Speed of train = (280 + 560)/120 ⇒ x = 840/120 = 7 m/s
If digits of each number are added and sum is multiplied by 4, and the resultants are arranged in descending order, which number will be at last position?
The downstream speed of a boat is 6 km/hr more than its upstream speed and the ratio of the speed of the boat in still water to the speed of the stream ...
Some equations are solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
11 * 7 = 72, 14 * 7 ...
Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.
Select the set in which the numbers are related in the same way as are the numbers of the following set.
(4, 152, 6)
If the numbers 1 and 2 are interchanged, 3 and 4 change places and also the symbols × and ÷, then find the value of 1 + 3 × 2 ÷ 4.
...Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the equation.
1496 * 8 * 13 * 40 * 5 * 0
Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is relate...
Which two numbers should be interchanged to make the given equation correct?
9 + 7 × 5 − 18 ÷ 2 = 3 × 4 − 10 + 45 ...
If each of the odd digits in the number ' 78343724' is decreased by 1 and each of the even digits is increased by 1, which of the following will be the...
