Question

समांतर शेणी 3,8,13,18 का कौन सा पद 78होगा​

Answer 1

Answer:

a = 3, d = 5, an = 78, n = ?

an = a + (n-1)d

78 = 3 + (n-1)5

78 = 3 + 5n - 5

5n = 80

n = 16

78 is the 16th term.

Step-by-step explanation:

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