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(d) 4,20,000     
Step-by-step explanation:
 It is Given that :
Total number of candidates who gave the test = 6,30,000
No. of candidates who answered Question A correctly =  3,30,000 candidates.
No. of candidates who answered Question B correctly =2,50,000 candidates
No. of candidates who answered Question C correctly 2,60,000 candidates.
No. of candidates who answered Both questions A and B correctly = 1,00,000 candidates.
No. of candidates who answered Both question B and C correctly = 90,000 candidates.
No. of candidates who answered  Both questions A and C = 80,000 candidates.
Let x =  Total number of candidates who answered all questions correctly
We, know  630000 =  2x+ 150000 +100000 +80000 +60000+ 90000 +90000 
 630000 -570000 = 2x
 x = 30000
 The students failed to clear the test = 150000+ 60000+ 90000 +4x 
                = 300000 +4 ×30000
               = 420000 

Answerd on:2019-05-15 Answerd By:PrashantIIST


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