Find the number the comes next 1.2.6,21.88,?
2 answers:
Answer:
445
Step-by-step explanation:
1 · 1 + 1= 2
2 · 2 + 2 = 6
6 · 3 + 3 = 21
21 · 4 + 4 = 88
88 · 5 + 5 = 445
Answer
455
Step-by-step explanation:
(1×1) + 1 = 2
(2×2) + 2 = 6
(6×3) + 3 = 21
(21×4)+4 = 88
(88×5)+5 = 445
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Answer:
15a
Step-by-step explanation:
Because 5(a + a + a) = 5 * (3a) = 15a
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