let some natural no. lying b/w 100 and1000 with multiple of 5 =105,110,115,120----------995 so,a=105 and d=5 and tn=995 t995=a (n-1)d 995=105 5n-5 995=100 5n 995-100=5n 895=5n 895/5=n 179=n so, natural no. which are lies b/w 100and 1000 with multiple of 5 are =179 answer
Written on Aug. 26, 2018, 4:46 p.m.