Win 1 of 10 Nintendo 3DS's
To enter text ONM3DS followed by a space, then the answer A, B or C, and then your name and address to 87474.
If you do not want to receive offers and promotions text the word STOP at the end of your message.
"Texts will be charged at £1 plus your standard network tariff rate."
To enter by post send your details and the answer in the post to ONM, 2 Balcombe Street, London, NW1 6NW. All entrants must be UK-based.