Progressive Patterns
A pattern
that increases or decreases in two or more ways are called progressive
patterns.
These
patterns are combination of more than one change. It can very in combination of
size, color and value.
Logmar
charts used by opmalmologists for vision test is an example of progressive
pattern.
Observe pattern in the following sequence and identify the rule.
Questions
and Answers on Progressive Patterns:
1. Find the
missing pair in the pattern.
(i) (3, 9),
(5, 15), (_____, _____), (9, 27)
(ii) (1,
7), (3, 21), (5, 35), (_____, _____).
(iii) 90,
85, 100, 95, 110, _____, _____.
(iv) 1, 2,
4, 7, 11, 16, _____, _____.
(v) A, AB,
ABC, ABCD, _____, _____.
(vi) 180,
130, 90, _____, _____.
Answers:
1. (i) (7, 21)
(ii) (7, 49)
(iii) 105, 120
(iv) 22, 29
(v) ABCDE, ABCDEF
(vi) 60, 40.
2. Identify
the type of pattern in the following figure.
Answer:
Progressive
pattern
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