Write down the first seven numbers that can be arranged as triangle – InterviewSolution

1.	Write down the first seven numbers that can be arranged as triangle (class VI maths) please send complete solution...
Answer» This is the Triangular Number SEQUENCE: 1, 3, 6, 10, 15, 21, 28, 36, 45, ... Step-by-step explanation:The first TRIANGLE has just one dot. The second triangle has ANOTHER row with 2 extra dots, making 1 + 2 = 3 The third triangle has another row with 3 extra dots, making 1 + 2 + 3 = 6 The fourth has 1 + 2 + 3 + 4 = 10please mark me brilliant

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