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HCF and LCM

Multiple Choice Questions

41.

Product of two co-prime numbers is 117. Then their LCM is

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42.
Find the maximum number of trees which can be planted 20 m apart on the two sides of a straight road 1760 m long.

174

176

180

178

178

Number of trees that can be planted on one side of a road
$equals space 1760 over 20 space plus space 1 space equals space 88 space plus space 1 space equals space 89$
∴ Trees on both sides = 2 x 89 = 178

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43.

The greatest common divisor of
$3 to the power of 3 to the power of 333 end exponent space plus space 1$ and $3 to the power of 3 to the power of 334 end exponent space plus space 1$ is