Level : Easy

 The\ value\ of\ the\ expression\ ^{47}C_{4}+ \sum_{j=1}^{5}^{52-j}C_{3}

A) 47C4

B) 52C5

C) 52C4

D)  none of these 

Options

The strongest acid amongst the following compounds is:

A. CH3COOH

B. HCOOH

C. CH3CH2CH(Cl)CO2H

D. ClCH2CH2CH2COOH

A. CH3COOH

B. HCOOH

C. CH3CH2CH(Cl)CO2H

D. ClCH2CH2CH2COOH

A. CH3COOH

B. HCOOH

C. CH3CH2CH(Cl)CO2H

D. ClCH2CH2CH2COOH

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