Question
If the average of s number is r⁴ and the average r
number is s⁴, then find the average of all r+ s numbersSolution
The average of the s number is = r⁴ total sum of s number = r⁴ × s and the average of r number = s⁴ total of r number = s⁴ × r so now the average of r +s number = (r⁴ × s + s⁴ × r )/ r + s = r s (r³ +s³)/r +s =r s (r+ s) (r² +s² -r s)/r + s =r s (r² +s² -r s)
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What should come in place of '?' in the given series?
11 32 74 158 326 ?
Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at varianc...
Two statements are given followed by three conclusions numbered I, II and III.Assuming the statements to be true, even if they seem to be at variance wi...
statement : Q > R ≥ S = V = Y > H < N
conclusion :
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II. Y < R
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Which two signs should be interchanged to make the given equation correct?
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