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The mean proportion of number 0.049 and 0.9 is:

A0.021

B0.21

C0.63

D21

Answer:

B. 0.21

Read Explanation:

Solution: Given: Two numbers are 0.049 and0.9 We have to find the mean proportion. Formula used: If One number is a and another is b Then there mean proportion will be , ✓(a × b) Calculation: Two numbers are 6 and 54 Then there mean proportion will be ✓(0.049 × 0.9) ⇒ 0.21 ∴ The mean proportion is 0.21

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