Question

Quantos números ímpares existem de 56 a 307

Answer 1

números ímpares entre 56 e 307. São eles:

57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 151, 153, 157, 159, 161, 163, 165,167,169, 171,173,177,179,181,183,185,187,189,191,193,195,197,199,201,203,205,207,209,211,213,215,217,219,221,223,225,227,229,231,233,235,237,239,241,243,245,247,249,251,253,255,257,259,261,263,265,267,269,271,273,275,277,279,281,283,285,287,289,291,293,295,297,299,301,303,305,307

Answer 2

an = a1 + ( n -1) . r

307 = 57 + ( n -1) . 2

307 = 57 + 2n - 2

307 = 55 + 2n

252 = 2n

n = 126

Existem 126 números impares de 56 a 307 (inclusive)