In a ceremony, out of 800 participants, 620 drank milk, 350 drank tea and 50 did not drink any of them. Find out how many people drank the both drinks using a Venn

diagram?

You can draw the diagram.

Step-by-step explanation:

The answer is 970.

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step-by-step explanation:

try remembering the steps

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.