Question

Find a ⋅ b.

a = <2, 4>, b = <2, 5>

A: <4, 9>
B: 24
C: <4, 20>
D: 16

Answer 1

C

Explanation:

a=4,9

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_3 _2 _1 0 1 2 3 4 5 6 7 8 9

4,9=5,6,7,8

b=2,

2,5=3,4

a.b=5,6,7,8,3,4=<4,20>