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There is a garden with n flowers. A person picks 2 flowers on Monday, it is replaced by 5 flowers on Tuesday. On Tuesday he picks 3 flowers, it is replaced by 7 flowers , …. Find the final number of flowers in the garden on Sunday.

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TCS Other Question

mr & mrs. smith invite their 9 frnds wd spouses. while having a group pic smith couple decided not to come together in pic. how many ways of arrangmnt of a pic.
options-
20!
19!+18!
18*19!
2*19!
two cars left simultaneously from two places p & Q for Q & p respectively.they crossed each other after x hrs.after dat 1 of d car took y hrs & another took z hrs to reach their destinations.which of d following holds true?
x=(y+z)/2
x=2yz/(y+z)
x=SQRT(yz)
x=(y^2+z^2)/(y+z)