Question

Fie sirul 6,10,14,18.......care este termenul de pe locul 105?

Answer 1

6,10,14,18..
r=10-6=4(din 4 in 4 șirul)
a105=a1+104r
a105=6+104•4
a 105=6+416
a 105=422

Answer 2

6 ,10 ,14, 18, 22, 26, 30, 34, 38, 42, 46, 50, 54, 58, 62, 66 ,70, 74, 78, 82, 86, 90, 94, 98, 102, 106, 110, 114, 118, 122, 126, 130, 134, 138, 142, 146, 150, 154, 158, 162, 166, 170, 174, 178, 182, 186, 190, 194, 198, 202, 206, 210, 214, 218, 222, 226, 230, 234, 238, 242, 246, 250, 254, 258, 262, 266, 270, 274, 278, 282, 286, 290, 294, 298, 302, 306, 310, 314, 318, 322, 326, 330, 334, 338, 342, 346, 350, 354, 358, 362, 366, 370, 374, 278, 382, 386, 390, 394, 398, 402, 406, 410, 414, 418, 422.

Sper ca te-am ajutat ! :))