Tentukan 1,6,11,16,21 u50​

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Tentukan 1,6,11,16,21 u50​

Un = a + ( n – 1 ) b

a = 1

b = 6 – 1 = 5

U50 = 1 + (50-1) 5

= 1 + (49)5

= 1 + 245

= 246