Page 93 - NUMINO Challenge_C1
P. 93
Type 10-2 Sequences with Patterned Groups

In the sequence below, what is the index of 2 ?
6

1, 1, 2, 1, 2, 3, 1, 2, 3, 4,
1213214321

1 Group the fractions that have the same sum of numerator and
denominator.

1 , 1 , 2 , 1 , 2 , 3 , 1 , 2 , 3 , 4 ,
1 2 1 3 2 1 4 3 2 1

2 In the group that contains 2 , what is the sum of the numerator and
6

denominator?

3 Determine how the numerators and denominators change within a group.

4 Complete the table, and find which group contains 2 .
6

Group 1234 5 6

Sum of Numerator 2 3
and Denominator

Number of Fractions 1 2

5 What is the first fraction of the group that contains 2 ? What is the index of 2
6 6

in the group?

6 What is the index of 2 in the whole sequence?
6

90 NUMINO Challenge C1
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