India, April 1 -- Maths brain teasers have long captivated enthusiasts and casual puzzlers alike, challenging our minds and making us rethink basic arithmetic. If you're a fan of these quirky puzzles, we've got a fresh one that has recently caught the attention of the internet.

(Also read: You've next-level eyesight if you can read the secret message hidden in this tricky image)

The brain teaser, shared on X (formerly Twitter) by the account Brainy Quiz, reads:

"5 + 5 = 11, 6 + 6 = 14, 7 + 7 = 17, 8 + 8 = 20, 9 + 9 = ?"

Check out the brain teaser here:

If you've ever enjoyed challenging your mind with tricky puzzles, this one is definitely for you. But, can you figure out the pattern behind this seemingly odd equation?

This isn't th...