Question

chap arithmetic progression :
how many multiples of 4 lie between 10 and 250?

Answer 1

Answer:

57 multiples of 4 lie between 10 and 250

Step-by-step explanation:

smallest multiple of 4 between 10 and 250 is 12

now greatest multiple of 4 between 10 and 250 id 248

So we get a A.P like this  

12 + 16 + 20 + 24 + - ---- -- - - - - - -- - - - --  + 248

here, a=12, d=4, tn=248

so by applying formula of tn.

i.e. tn= 2a+(n-1)d

we can value which will comes to be 57.    

Answer 2

plz refer to this attachment