Accounting & Commerce

Not really. You can go ahead and try to score maximum in CAT.

Procedure of admission in correspondence B.Com.
Those candidates have completed 12th class in any subject are applicable for B.Com in correspondence.
But you 12th class must be completed minimum 45% marks from a recognised board then you are applicable for doing B.Com by Mumbai University.
The candidat

The difference is the specialisation, the MBA subjects would remain the same however, the final semester subjects would be as per specialisation.

No, you can not get it the 2nd-year if you drop out in the 1st year.

MCA would be a better option.

You can check the details: https://www.shiksha.com/college/institute-of-management-research-and-technology-lucknow-29008?city=138&fro=serp&pn=1&tn=1&ct=institute<i=29008&ts=12712004

Yes, you can pursue event management with commerce without maths. The minimums core that you should get is 60% and then appear for entrance tests.

Please see: https://www.shiksha.com/college/sri-venkateswara-college-dhaula-kuan-delhi-23925
https://www.shiksha.com/college/sri-guru-gobind-singh-college-of-commerce-pitampura-delhi-23921

Eligibility Criteria for B.com Course in Delhi University :-
You should complete 12th standard in any discipline from with Minimum 55% percentage of marks recognized university . If your belong from sc/st candidate then relaxation is relaxation is applicable . Your age should not more the 18 years .

Please see: https://www.shiksha.com/it-software/articles/your-career-after-doeacc-blogId-4579