Diego made a castle with small building blocks. he used an even number of blocks. the number of blocks is between 700 and 800. the number of blocks is the sum of two of the numbers below.

The two numbers are 476 and  284

Step-by-step explanation:

Given:

He used an even number of blocks

The number of blocks is between 700 and 800

The number of blocks is the sum of two

To Find :

Two number = ?

Solution:

The sum of  an odd number and an even number id always odd. So  423 can be eliminated

So two numbers must be any of the 4 remaining options

Its also given that the number lies between 700 and 800. So the sum should be greater than 700 and lesser than 800

by trial and error method

352+476 = 828 ( greater than 700 but greater than 800, condition fails)

352+326 = 678  ( lesser than 700 but lesser than 800, condition fails)

352+284 = 636 ( lesser than 700 but lesser than 800, condition fails)

476+326 = 802 ( greater than 700 but greater than 800, condition fails)

476+284 = 760 (  greater than 700 and lesser than 800)

b. 2 and 4

step-by-step explanation: