Question

Which number will replace the question mark?

OPTIONS:
a)70
b)74
c)68
d)86

Answer 1

Answer:

74

Step-by-step explanation:

${4}^{2} + {3}^{2} + {2}^{2} + {1}^{2} = 30$

${8}^{2} + {7}^{2} + {6}^{2} + {5}^{2} = 174$

${6}^{2} + {5}^{2} + {2}^{2} + {3}^{2} = 74$