If $7 * 1 = 64; 3 * 9 = 144$ . What is the value of $5 * 6$ ?

22

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55

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66

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121

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Solution

The correct option is A $121$
$a * b = {(a + b)}^{2}$
$7 * 1 = {(7 + 1)}^{2} = 64$
$3 * 9 = {(3 + 9)}^{2} = 144$
$5 * 6 = {(5 + 6)}^{2} = 121$

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Similar questions

7 * 1 = 64

3 * 9 = 144

5 * 6

(11)_{2} + (22)_{3} + (33)_{4} + (44)_{5} + (55)_{6} + (66)_{7} + (77)_{8} + (88)_{9} = (?)_{10}

(\frac{1}{\sqrt{9} - \sqrt{8}} - \frac{1}{\sqrt{8} - \sqrt{7}} + \frac{1}{\sqrt{7} - \sqrt{6}} - \frac{1}{\sqrt{6} - \sqrt{5}} + \frac{1}{\sqrt{5} - \sqrt{4}})

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