On $24^{\text {th }}$ May, 2008 the maximum temperature of Delhi, Kollkata and Mumbai were recorded as $35^{\circ} C$, $33^{\circ}$ and $34^{\circ} C$ respectively. What was the maximum temperature of Chennai so that the average maximum temperature of those cities would be $35^{\circ} C$ (in $^{\circ} C$ )
$34$
$35$
$36$
$38$
Of the three numbers, the first is twice the second and the second is twice the third. The average of the reciprocal of the numbers is $\frac{7}{72} .$ The numbers are
The average of $7$ consecutive numbers is $20 .$ The largest of these numbers is
The average of a non-zero number and its square is $5$ times the number. The number is
The average weight of $8$ persons increases by $2.5\, kg$ when a new person comes in place of one of them weighing $65\, kg$. What might be the weight of the new person? (in $kg$)
The average of $6$ observations is $12 .$ A new seventh observation is included and the new average is decreased by $1$. The seventh observation is