Quantitative-aptitude Questions Set 67:
What is the unit digit in (758 × 395)?
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If a2 + b2 = 144 and ab = 56, then find the value of (a + b) / (a - b).
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Which of the following numbers is divisible by each one of 3, 7, 9 and 11?
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The sequence 58, 52, 46, 40, 34, ... follows a pattern. What is the next number in the sequence?
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How long will it take for a 100 m long train moving at 36 km/h to cross an electric pole?
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Solve the following quadratic equations to find the values of x and y:
I. x2 + 11x + 30 = 0
II. y2 + 15y + 56 = 0
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A two-digit number is such that the product of its digits is 30. When 9 is added to the number, the digits are reversed. Find the sum of the digits of the number.
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How many such pairs of digits are there in the number 421579368 each of which has as many digits between them in the number as when they are arranged in ascending order?
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Two trains are moving in opposite directions @ 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is:
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Nandu and Madhu compete in their school elections where the number of votes received by Nandu exceeds those received by Madhu by 15% of the total number of valid votes. If 20% of the total votes were invalid and a total of 1440 votes were polled, then how many valid votes did Madhu get?
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