The product of a number and its reciprocal is always equals to 1.

For Example : Let the number be 4.

Now, its reciprocal is 1/4

Hence, required product = 4 x 1/4 = 1.

Now, take the number as -15.

Then its reciprocal is -1/15

Required product = -15 x -1/15 = 1.

Hence, the product of a number and its reciprocal is 1.

Jim Laker was the first player to take all 10 wickets in a Test match innings. Ten for 53 in the Australians 2nd innings of the 4th Ashes Test at Old Trafford in 1956.

The only other bowler to achieve the feat is India's Anil Kumble, who took ten for 74 at Delhi's Feroz Shah Kotla against Pakistan in 1999.

Elephant has worst shortest memory and dolphin has longest memory in the Animal kingdom.

In human body, glucose is stored in blood stream before it is converted to glycogen. Excess glucose is stored in the form of fats. After conversion, glycogen is stored in Muscles and Liver.

The first identification of Nipah virus as a cause of an outbreak of encephalitis was reported in 2001 in Meherpur district of Bangladesh. Since, then Outbreaks of the deadly Nipah virus has been recorded almost every year in selected districts of Bangladesh.

Drinking raw date palm sap and contact with a case were identified as the major risk factors for acquiring the disease.

Polar lights (aurora polaris) are a natural phenomenon found in both the northern and southern hemispheres that can be truly awe inspiring.

Northern lights are also called by their scientific name, aurora borealis, and

Southern lights are called aurora australis.

The gram formula mass is nothing but molar mass.

Composition :

Symbol      Element       Atomic weight       Atoms
   

     P         Phosphorus       30.973762               1       = 30.973
   

     O         Oxygen             15.9994                  4       =  63.998
   

     N         Nitrogen            14.0067                  3       =  42.020
   

     H         Hydrogen          1.00794                  12      =  12.096

Total   =  30.973+63.998+42.020+12.096 = 149.087

The Five senses that we have are: Sight, smell, hear, touch and taste. Rousseau emphasised that "Senses are the gateways of knowledge".