Book Maths Puzzle

Inrert +,-
anywhere between eight 8's so that result is thousand

Read Solution (Total 4)

Book Other Question

you are in a room there are 3 switches in that room. One of the switches belong to the bulb which is outside the room.You have to find the correct switch for the bulb going only once to see weather the bulb is glowing or not.Think!
log5base3*log27base25
find in one logarithm