Consider the following sum :

$\bullet + 1\bullet + 2\bullet + \bullet 3 + \bullet 1 = 21\bullet$

In the above sum, $\bullet$ stands for

Kepler. Discussing PYQs. Q.no. 2

Consider the following sum : ∙+1∙+2∙+∙3+∙1=21∙\bullet + 1\bullet + 2\bullet + \bullet 3 + \bullet 1 = 21\bullet∙+1∙+2∙+∙3+∙1=21∙ In the above sum, ∙\bullet∙ stands for