⟩ How many 9 digit no.s are divisible by 7a.1256b.1986c.1524d.1874
Try this excel macro
Sub test()
k = 0
For i = 100000000 To 999999999
If (i Mod 7 = 0) Then
k = k + 1
End If
Next
Cells(1, 1) = k
End Sub
Ans:
128571428
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Home Aptitude
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