The only single digit prime numbers are 2, 3, 5 and 7.
Let us use the possible combinations and check when the difference comes to be 45.
Son = 23, Father = 32, Difference = 7
Son = 25, Father = 52, Difference = 27
Son = 27, Father = 72, Difference = 45
This stand apt for the requirements. Thus the present age of the father is 72 years and that of son is 27 years.
A homicide team enters a crime scene where a dead body of a fat old man lies there on the floor with blood oozing out of his head. The victim is holding a gun and a tape recorder lies there by his side. One of the detective picks up the recorder and plays it "I am tired of this life and hence I have decided to relieve myself from the worldly pains". A gunshot follows the message.
The teams starts investigating a murder investigation.
Two companions Terry and Garry were talking about their families. Terry told some great stories about his courageous grandfather who fought for Britain in "World War I". Terry told that his grandfather is so brave that he was awarded a bravery honour medal with words "For our Courageous Soldiers In World War I" embedded into it.
In the figure given below, you can see that there are five squares. Supposedly if this figure is formed using different matchsticks (refer the slight gap between matchsticks), can you remove just two matchsticks so that only two squares remain ?
You are giving an intelligence test. In that, you are provided by the code - MOD OAT AIM DUE TIE
You know that only one word from this code is true and the rest ones are only put in to make the task difficult for you. To understand, you are provided with a clue – If you are told any one of the characters of the code word, you can find out the word easily.
Can you deduce the actual code word from the entire code?
Let us assume that the word is MOD. Now if you are told one character of this word, you would not be able to identify the number of vowels in the word. For example if you are told M, then the word can be MOD or AIM but they both have different number of vowels. If you are told about O, then there are two words MOD and OAT which again have different number of vowels. If you are told about D, there are two words again MOD and DUE which have different numbers of vowels again.
In such manner, all the words that have M, O or D in them can be excluded. Then only word that remains is TIE.
If you are told about T, there are two words OAT and TIE which both have two vowels.
If you are told about I, there are two words AIM and TIE which both have two vowels.
If you are told about E, there are two words DUE and TIE which both have two vowels.
A petri dish kept in a lab has a colony of healthy bacteria. Every bacterium divides itself into two in exactly two minutes. Now the colony started with a single cell at 2 pm. If the petri dish was exactly half full of bacteria at 3 pm, when will the dish become full of bacteria?
Since every bacterium divides into two in two minutes and we know the fact that the dish was half filled with bacteria at 3 pm, after exactly 2 minutes, all will divide into two and will fill the petri dish. Thus, the petri dish will become full at 3:02 pm.