$\begin{array}{1 1} 20 \\ 25 \\ 22 \\ 21 \end{array}$

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Answer : (c) 22

Explanation :

2 digit numbers 10 to 99 first 2 digit number divisible by 4 is 12. Last 2 digit no divisible by 4 => 96

$sequence\; is \;12,16,20\;------\;96$

$n\;is\;the\;number\;of\;terms\;in\;the\;above\;AP$

$a=12\;,t_{n}=96\;,d=4$

$t_{n}=12+(n-1)\;96$

$4(n-1)=84$

$n-1=\frac{84}{4}=21$

$n=22.$

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