EXAMIANS
When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ?
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On a new year eve, every student of a class sends a card to every other student. If the total number of cards delivered is 1980, how many students are there in the class ?
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What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4?
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The product of two consecutive odd numbers is 6723. Find is the greater number.
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In how many different ways can the letters of the word CORPORATION be arranged ?
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In a 150-litre mixture of milk and water, the percentage of milk is 84%. How much water should be added so that the percentage of milk becomes 52.5% ?
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In a five-litre mixture of milk and water the portion of water is 30%. How much milk should be added to the mixture so that the portion of water reduces to 5% ?
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2/11 of 3/7 of 8/13 of 12012 = ?
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The average of five consecutive even numbers, p, q, r, s and t is 40. What is the product of 'r' and 's' ?
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Find the least number when successively divided by 2, 3 and 7 leaves remainders 1, 2 and 3 respectively?
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