Question

Find the value of A , B , C and give the reason also: ( reason is important ) :

1)B 9 2) 3 A 0 7
+4 A +1 1 B 2
=A 5 = 4 C 7 C​

Answer 1

Answer:

Answer

A+8=3, then A has to be 5 because unit digit of the sum has to be 3.

There is a carry-over of 1.

So, 4+9+1=14

A=5,B=4 and C=1

Answer 2

Answer:

b

∘

=45

∘

(vertically opposite angles)

a

∘

=45

∘

(corresponding angles)

c

∘

=a

∘

=45

∘

(vertically opposite angles)

c

∘

+d

∘

=180

∘

(linear pair)

d

∘

=180

∘

−c

∘

=180

∘

−45

∘

=135

∘