Q. Easy

10!!

• = 10 × 8 × 6 × 4 × 2
• = 80 × 6 × 4 × 2
• = 480 × 4 × 2
• = 1.920 × 2
• = 3.840

9!!

• = 9 × 7 × 5 × 3 × 1
• = 63 × 5 × 3 × 1
• = 315 × 3 × 1
• = 945 × 1
• = 945

• 3.840 + 945

• = 4.785

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5²

• = 5 × 5
• = 25

9²

• = 9 × 9
• = 81

• 25 + 81

• = 106

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√64

= √8² = 8

= 8 × 8

= 64

_______________________

Kesimpulan:

10!! + 9!!

= 4.785

25 + 81

= 106

√64

= 64

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Jawaban:

1.) 10!! + 9!!

→ (10×8×6×4×2) + (9×7×5×3×1)

→ (80×24×2) + (63×15)

→ 3.840 + 945

→ 4.785

2.) 5² + 9²

→ (5 × 5) + (9 × 9)

→ 25 + 81

→ 106

3.) √64

→ √64

→ 8

→ 8²

→ 8 × 8

→ 64