Vì 12 chia hết cho 4 và 3 

=> 18^3.12 chia hết cho 4 và 3

+) Tín Phong : thổi từ 2 vùng áp cao 30 độ Bắc Nam ( BN ) về áp thấp Xích đạo

+) Tây ôn đới : thổi từ 2 vùng áp cao 30 độ Bắc Nam ( BN ) về vùng áp thấp 60 độ BN

+) Đông Cực : thổi từ 2 vùng cực về vùng áp thấp 60 độ BN+)

= ( 11 + 88) + ( 22 + 77) + ( 33 + 66 ) + ( 44 + 55 )

=        99     +    99         + 99            +      99

= 99 × 4

= 396

Số các thừa số trong dãy :

(363 - 3) : 20 + 1 = 19 thừa số

3 x 3 x 3 x 3 x 3 x 3 có chứ só tần cùng bằng 9

9 x 9 x 9 x 3 có chữ số tận cùng bằng 7

Vậy số a có chữ số tận cùng bằng 7

80 - 30 =50

tk mk nha

được một đống cát lớn hơn 

k mk nha

kb nha

số đó có phải là 282 ko

đầu cân điện là<

vì 5 x 24 = 120

nen 100 < 5 x 24 

k nha

KET QUA DUNG LA

X=29-13

X=16

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