Question

what are the no. between 50 to 60 and is sum​

Answer 1

Answer:

The numbers between 50 and 60 are 51, 52, 53, ....,59.

Step-by-step explanation:

This sum can be calculated by using Arithmetic Progression.

Here, d=1, a=51, n=9 and l= 59,

Sn= [n/2][a+l]

= [9/2][51+59]

$(9 \div 2)(51 + 59)$

= 495.

I hope this helps you a lot

Answer 2

Answer:no between 50 and 60 is 51,52,53,54,55,56,57,58,59.

Answer is 575

Step-by-step explanation:

Sum of 50 no. Is

Sn=n/2(2a+(n-1)d

S50=50/2(2×1+(50-1)1

= 25(2+(49)

= 25(51)

Sum of 50 no. Is 1275.

Then sum of 60 no.

S60=60/2(2a+(n-1)d)

S60= 30 (2+(60-1)1

= 30 (2+(59)

= 30(61)

Sum of 60 no. Is 1830.

So the sum of no between 50 and 60 is sum of 60 no. -sum of 50 no.

1850-1275

=575