38. Which number is incorrect in the sequence 42, 49, 54, 63, 70?
A. 49
B. 54
C. 63
D.70
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38. Which number is incorrect in the sequence 42, 49, 54, 63, 70?
A. 49
B. 54
C. 63
D.70
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ANSWER
B. 54
Step-by-step explanation:
42 and 49 the common difference is 7
49 plus 7 is 56 not 54
56 plus 7 is 63
and 63 plus 7 is 70.