In this sequence, the rule to get
the next number is as follows. Multiply by two, and then add
three. Write the missing numbers. What, 25, 53, and what.
The first number in the sequence is
not given. We reach 25 by multiplying this
missing number by two and then adding three. So to find the first number in the
sequence, our missing number, we need to work backwards. We need to take away three from 25
and divide the answer by two. 25 take away three is 22. And 22 divided by two is 11. So the first missing number is
11. 11, 25, 53, our missing number.
To find this number, we can follow
the rule. We need to multiply 53 by two,
which is 106, and then add three to 106. Double 53 plus three equals
The two missing numbers in the
sequence are 11 and 109.