Smiling Guards

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?




Similar Logic Riddles

Katrina wants to go on a date and prefers her date to be tall, dark and handsome.

Of the preferred traits - tall, dark and handsome - no two of Shahrukh, Ajay, Salman and Akshay have the same number.
Only Shahrukh or Akshay is tall and fair.
Only Ajay or Salman is short and handsome.
Shahrukh and Salman are either both tall or short.
Ajay and Akshay are either both dark or both fair.
Who is Katrina's date?

Asked by Neha on 12 May 2026


A game is being played where eight players can last for thirty-five minutes. Six substitutes alternate with each player in this game. Thus, all players are on the pitch for the same amount of time including the substitutes.

For how long is each player on the pitch?

Asked by Neha on 29 Aug 2023

What four weights can be used to balance from 1 to 30 pounds?

Asked by Neha on 25 Apr 2022


A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Asked by Neha on 04 Mar 2022

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Asked by Neha on 09 Apr 2023

What makes this number unique: 8,549,176,320?

Asked by Neha on 08 Jul 2025


Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

Asked by Neha on 15 May 2024

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

Asked by Neha on 24 Jul 2024

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?

Asked by Neha on 27 Oct 2023


Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

Asked by Neha on 30 May 2026

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Amazing Facts

Out of the Box

The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.