Question
If the odd digits are decreased by 1 in the number
63478469, then how many prime numbers remain after rearrangement?Solution
6Â Â Â Â Â Â Â Â Â 3Â Â Â Â Â Â Â Â Â 4Â Â Â Â Â Â Â Â Â 7Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â 4Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â 9Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â 2 Â Â Â Â Â Â Â Â Â 4Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â 4Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â 8
Who of the following group is facing south direction?
Read the directions carefully and answer the following question.
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Which of the following is correct?
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