Question

(1) Find out which letters in the English alphabet look the same after half a turn.
(2) Which of these English words reads the same on half a turn?
ZOOM, MOW, SWIMS, SIS, NOON
(3) Give half a turn to the numbers from 0 to 9.
Find which of them still looks the same.
(4) Think of all 2, 3 and 4 digit numbers which look the same on half a turn.

Example
2 digit numbers 1 1, _______, _______
3 digit numbers 1 0 1, 1 1 1, _______, _______, _______, _______, _______, ________
4 digit numbers 1 00 1, 1 1 1 1, _______, ________, ________, ________, ________

Answer 1

(1) H, I, X, N, S, Z and O.

(2) MOW, SWIMS, SIS, and NOON read the same on half a turn.

(3) 0, 1 and 8 are the numbers that look the same after half a turn.

(4) 2 digit numbers that look the same on half a turn are 11, 88.
3 digit numbers that look the same on half a turn are 101, 111, 808, 888, 818, 181,
4 digit numbers that look the same on half a turn are 1001, 1111, 8008, 8888, 8118, 1881.