Find the wrong number in the following number series-(8 \quad 13 \quad 21 \quad 60 \quad 267 \quad 1340)

The pattern is: 8+13=21 (but this gives 21, not 60). Let's check the actual pattern: 13-8=5, 21-13=8, 60-21=39, 267-60=207, 1340-267=1073. The pattern appears to be: multiply by 3 and subtract or add. 8*3-1=23 (doesn't match). Actually: 8+5=13, 13+8=21, but then 21 should become 21+? The pattern might be: (8+13)*3 = 63 ≈ 60. Or checking: 8+13+21=42, not 60. The claimed answer E (60) is wrong because 60 doesn't fit the arithmetic pattern shown by 8, 13, 21.