Question

s = 1×2 + 2×3 + 3×4 ​

Answer 1

Answer:

s= 1×2 + 2×3 + 3×4

s= 2+6+12

s=8+12

s= 20.

Explanation:

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Answer 2

Answer:

s = 1×2 + 2×3 + 3×4

= 2 + 6 + 12

=8+12

=20