sir, i have completed my 12 - indian embassy school sana'a(63%),my bbm from mangalore university(63%).i wish to enter any iims ,possible

Hi Vysakh, The admission to IIMs is through Common aptitude test, the Eligibility Criteria for which is as follows : The candidate must hold a Bachelor's Degree, with at least 50% marks or equivalent CGPA. Since you meet these requirements, you're eligible to apply for CAT.