Questions & Answers: "Factors and Multiples (HCF and LCM)"

Complete guide to "Factors and Multiples (HCF and LCM)" for Math students. Below you will find important questions and model answers to help you prepare.

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6 Questions

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If L.C.M. of two consecutive even numbers is 312, then what will be the sum of these two numbers?

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Reena had some flowers. She prepared garlands from them. When she made every garland of 12 flowers, she was left with 11 flowers. If she had used 16 flowers for each garland then she would have left with 15 flowers. If she had used 18 flowers for each garland then she would have left with 17 flowers. Find the minimum number of flowers that she may have.

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161

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155

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143

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145

Find the smallest number from the following such that when it is divided by every 1 digit prime number, every time the remainder is 1.

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106

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211

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If a number is divided by 18 then the remainder is 1, if it is divided by 24 then the remainder is 7 and if it is divided by 36 then the remainder is 19. What is the smallest such type of number?

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The LCM of two co-prime numbers is 910 and their sum is 83. What will be the difference between the two numbers?

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H.C.F of two digit two numbers is 14 and L.C.M. is 490. Find the sum of those two numbers.

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140

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147

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168

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182