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Find the missing number in each sequence.
8. 30,
19, 137,…​

By Quinn

Find the missing number in each sequence.
8. 30,
19, 137,…​

About the author
Quinn

estimate the product and quotient.
a. 24×2,705
b. 87÷8​

1
18. What is the least fraction that must be added to
1 1 1
1==1==1= to make the result an integer?
3 2 9