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Mishika Singh from EISB, Bangalore
Subject :ICSO    Class : Class 4

Select the INCORRECT match.
A Abacus – First calculating device. It was invented in the 16th century in China.
B Napier’s Bones – It was used for addition, subtraction, multiplication and division, made by Sir John Napier.
C Pascaline – First electro-mechanical calculator, invented by Blaise Pascal.
D Difference Engine – First mechanical computer, designed by Charles Babbage.


Ans 1:

Aryan Bomanwar from Chirec international School, HYDERABAD
Class : Class 6

Ans 2:

Gaurav Saini from Warren academy Jaipur , Jaipur
Class : Class 7

Ans 3:

Dripto Chakraborty from Greenwood High Sajarpur, Bangalore
Class : Class 5
Not D the answer is C

Ans 4:

Vikrant Doley from NPS INTERNATIONAL SCHOOL, GUWAHATI
Class : Class 8
D

Ans 5:

Medhansh Sachdeva from Deens Academy, Bangalore
Class : Class 7

Ans 6:

yashmit singh from la blossom school, jalandhar
Class : Class 6
C

Ans 7:

AMBALIKAA from LOYOLA SCHOOL BHUBANESWAR, Bhubaneswar
Class : Class 7
Option - C

Ans 8:

Hamzah Inamdar from SHARDA ENGLISH SCHOOL KAIJ DIST BEED, KAIJ
Class : Class 4

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