Q. Add two straight lines to this letter M to leave a different letter
New kid on the block Dadpad answered;
A."If I knew the answer I'd post it."
Alluding to the fact as picked up by Whim:
Add a horizontal line on top and to the bottom of the M. (To form an envelope)
??? ??? ??? ??? ??? ??? ???
All for one and one for all.
Nice to see you back Whim, oh, and your front too!
Mark:
WELL-KNOWN PHRASE
all for one and one for all
RICKY
Ricky becomes Picky
Bonus round:
He multiplies the cube number 8 by 27, then removes 1 (1 cubed) from the resultant number 216 to leave 26.
Don't look like that! I never said it was going to be easy.
At a meeting of four famous detectives in Los Angeles Kojak is murdered with a poisoned lollipop

. The three suspects are Cannon, Columbo and Ironside. During the ensuing investigation the L.A.P.D. receive this anonymous tip-off written on a scrap of paper which read:
Kojak was murdered by _.
Which one of the three detectives does it implicate
What number should replace the question mark below
O3 7 5 5 4 7 6 6 7