1.

Arrange in ascending order : -18, 21, -4, -9, -12, -6, -15, -5, 0, 6, -21

Answer»

` 21, -18, -12, -15, -9, -6, -5, -4, 0, 6, -21`
` -21, -18, -15, -12, -9, -6, -5, -4, 0, 6, 21`
` -21, -18, -15, -12, -4, -5, -6, -9, 0, 6, 21`
` -21, -15, -18, -12, -9, -6, -5, -4, 0, 6, 21`

Answer :B


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