a. 15² = 15 × 15 = 225
b. 12!! = 12×10×8×6×4×2 = 460.80
c. 10 × 11 = 110
-› 15²
____
= ( 15 × 15 )
= 225
____________________
-› 12!!
= ( 12 × 10 × 8 × 6 × 4 × 2 )
= ( 120 × 8 × 6 × 4 × 2 )
= ( 960 × 6 × 4 × 2 )
= ( 5.760 × 4 × 2 )
= ( 23.040 × 2 )
= 46.080
___________________
-› 10 × 11
= 110
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a. 15² = 15 × 15 = 225
b. 12!! = 12×10×8×6×4×2 = 460.80
c. 10 × 11 = 110
-› 15²
____
= ( 15 × 15 )
= 225
____________________
-› 12!!
____
= ( 12 × 10 × 8 × 6 × 4 × 2 )
= ( 120 × 8 × 6 × 4 × 2 )
= ( 960 × 6 × 4 × 2 )
= ( 5.760 × 4 × 2 )
= ( 23.040 × 2 )
= 46.080
___________________
-› 10 × 11
____
= 110
___________________