1). 5²³ ÷ 5²¹
= 5 ²³‐²¹
= 5²
= 5 × 5
= 25
========
2). 8!!
= 8 × 6 × 4 × 2
= 384
=> 5²³ ÷ 5²¹
=> 5^( 23 - 21 )
=> 5²
=> 5 × 5
=> 5 + 5 + 5 + 5 + 5
=> 25
=> 8 × 6 × 4 × 2
=> 48 × 4 × 2
=> 192 × 2
=> 384
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1). 5²³ ÷ 5²¹
= 5 ²³‐²¹
= 5²
= 5 × 5
= 25
========
2). 8!!
= 8 × 6 × 4 × 2
= 384
=> 5²³ ÷ 5²¹
=> 5^( 23 - 21 )
=> 5²
=> 5 × 5
=> 5 + 5 + 5 + 5 + 5
=> 25
=> 8 × 6 × 4 × 2
=> 48 × 4 × 2
=> 192 × 2
=> 384