Two numbers are in the ratio 5 : 6 and their LCM is 240, the smaller number is1). 162). 203). 244). 36
Let the number be 5x and 6x
Then, their LCM be 30x = 240
⇒ x = 8
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1. What should come in place of '?' in the following number series? 6, 7, 16, 51, ?, 1045
2. What approximate value will come in place of the question mark ‘?’ in the following questions? (You are not expected to calculate the exact value) 30.9 × 3000 - 10.1 × 1100 + 8298 - 4302 = ?
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4. A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cms side. What is of the ratio the total surface areas of the smaller cubes and the large cube?
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7. Find the wrong term in the series. 1, 6, 23, 60, 125, 225, 371
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