3 pencils for 1.65 implies that pencils are 1.65/3 = 0.55 each.
Then 7 are 7*0.55 = 3.85
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The Highest Common Factor (HCF) of 210 and 165 is the largest positive integer that divides both numbers without leaving a remainder. To find the HCF, you can use the Euclidean algorithm, which involves dividing the larger number by the smaller number and then using the remainder as the new divisor until the remainder becomes zero. In this case, the HCF of 210 and 165 is 15.
-7
To find out how much 3 is less than 10, you subtract 3 from 10. The calculation is 10 - 3 = 7. Therefore, 3 is 7 less than 10.
it is 7